A great looking choker necklace from Japan is made up of a variety of bead shapes in hues of blue.  Each bead is separated by a clear spacer bead and the sizes graduate nicely from larger in the front to smaller around the neck.  Circa the 1050s, the strands are strung on string ending in an ornate silvertone terminal.  The clasp is a J-hook that is marked “Japan”.  They measure 15” long or choker length.

View of the clasp: